Abstract
Blue‐spotted trevally, Caranx bucculentus, were fed different rations of pilchard and prawn in order to investigate feeding and growth relationships. Maintenance rations at 25.5° C amounted to 3.7% B.W. day−1 and 2.7% B.W. day−1 for prawns and pilchards, respectively. Additional feeding experiments at 28.9° C yielded a maintenance ration of prawns of 3.8% B.W. day−1, suggesting there is very little if any temperature effect on the feeding‐growth relationship over the range studied. Fish fed twice or more each day consumed about 7.3 ± 1.4% B.W. day−1.Given the biomass of this trevally in Albatross Bay, Gulf of Carpentaria, and the contribution of prawns to its diet, we estimate consumption of commercial prawns at 25 ± 5 g.ha−1 day−1 or 11 g kg−1 day−1.
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